Type slug end cutter



Sept. 2, 1947. c. w. CURLE arm 7 2,426,727

TYPE SLUG END CUTTER:

ori ip l Filed Oct. :51, 1941 4 Sheeis-Sheei} 1 INVENTOR; CHARLES w. CURLE THE 5 c. cwzus RAY NEWTON ATTOANE YJ Sept. 2, 1947 w, CURL]; .TA 2,426,727

TYPE SLUG END CUTTER Original Filed Oct. 31 194-1 4 Shee ts-Sheet 2 N T g g/225s w. c0 21 0R5 R ga wage ATTOR/V'YS Sept 2,1947. c. w. CURLE EIV'IAL I ,2;426,727

Y TYPE v$1.1m END CUTTER Originai Filed 061:. 31, 1941 4 Sheets-Sheet 3 V ENT CHARLES W GY/ LE THEODORE C. CUELE RAY F. NEWTON ATTORNEYS Patented Sept. 2, 1947 TYPE SLUG END CUTTER Charles W. Curie, San Francisco, Theodore C. Curie, Ross, and Ray F. New-tori, San Francisco,

Calif.

Original application October 31, 1941, Serial No.

417,348, new Patent No. 2,369,947, dated February 20, 1945.

Divided and this application January 16, 1945, Serial No. 573,949

3 Claims.

The present invention relates to the trimming of type slugs as they issue from a line casting machine, and particularly to a machine for cutting on the ends of the slugs to make them square and parallel with each other, and to produce slugs of equal length.

The machine of the present invention is designed for operation in conjunction with a side trimmer and a low slugger of the types disclosed in our co-pending applications, entitled Type slug side trimmer, filed October 31, 1941, Serial Number 417,346, now Patent N 0. 2,374,655, granted May 1, 1945, and Type slug low slugger, filed October 31, 1941, Serial Number 417,347, now Patent No. 2,374,656, granted May 1, 1945, and this application is a division of our co-pending application entitled, Type slug end cutter filed October 31, 1941, Serial Number 417,348, now Patent NJ. 2,369,947, granted February 20, 1945. The

mechanism disclosed herein is adapted, however for use with any slug trimming mechanism, or -may if desired, be used independently of such mechanisms.

The application of which the present application is a division discloses an end cutter for type slugs embodying improved mechanism for gripping a slug presented to it, for drawing the slug into engagement with spaced cutter members, and thereafter for stackin the cut slug in a galley or the like.

It is the object of the present invention to provide a mounting for cutter members in a machine of the character described by means of which they will be readily adjustable with relation to each other to cut slugs of different length and with a high degree of accuracy.

A further object is the provision of means for adjusting both cutter members, one in steps to accommodate slugs of different lengths, and the other in small increments to produce an over-all length for the finished slug of any desired measurement.

A further object is the provision in a machine of this character of a mounting for cutter members therein which will accommodate a great many slugs presented to be cut in rapid succession and by automaticcontinuously operating slug presenting and discharging mechanism.

Further objects and advantages of the invention are made apparent in the following specification, wherein reference is made to the accompanying drawings, in which one form of the invention is illustrated in detail.

In the drawings-- Fig. 1 is a plan view of the major portion of a machine embodying the present invention;

Fig. 2 is a similar view, with parts removed and parts in section, to illustrate certain features of construction;

Fig. 3 is a sectional view taken along line IIIIII of Fig. 2;

Fig. 4 is ase'ction'al view taken along line IV--IV of-Fig. 3;

Fig. 5 is a sectional viewta'ken along line V-V ofFig. 3'; and, 1

Fig.6 is a sectional view'takcn along line VI-VI of Fig. 5.

Referring to Figs. 1, 2., and 6, the end cutter of the present invention is's'ho'w-n as comprisinga shaft is which supports and drives a pair of spaced circular saws H and 12. The particular manner in which the saws are mounted and adjusted will be set forth in detail hereinafter They may for'the present be considered as rotating continuously and asspaced' apart a predet'er-- mined distance so that a slug presented to them from a position parallel to the shaft Ill will be trimmed at both its ends. 1

A slug, issuing from a line casting machine, and usually having been previously subjected its side" trimming and low" slugging operations, descendsby gravity or, preferably, by suitable slug advancing mechanism of the kind disclosed i n our co pending application entitled, Type slug side trimmer, SerialNumber 417,346; filed October 31, 1941, through a chute 1'3 (see Figs. 1 and 2-) and comes to rest on atable ii-which is-slotted as 23,1315 to permit the escape of chips formed as residue of the sawing operation.

The saws I I and 1 2' are disposed to theriglit of the table M and to its left is a galley 16 upon which theyissue from the line casting machine. As eachslug is received by the table l4, it is brought to rest directly in front of the saws by engagement with a stop bar i1. This stopbar is for-med as shown in Fig. 3, with a sharpened forward edge which cuts into the type metal-of which the slug is formed, upon impact of the slug against it, in order to'limit any tendency of the slug to rebound dueto the impact. The stop bar H is mounted on-a threaded stud 18 which may be adjusted and fixed in position bya pair of lock nuts 19 and 20.

Immediately after the slug-comes tores't in front of the saws, it is g-rippecl'between two sets of clamping jaws, each set of which comprises a lower jaw 21 and an upper jaw 22. These clamping I jaws first draw the slug toward the rotating circularsaws'which sever its ends to proley I6.

is a division.

duce a slug of exact length predetermined by the spacing of the saws, then push it back over the table M, release it, and deposit it on the gal- The manner in which the jaws 2| and 22 are constructed and the manner in-which they func: tion is all clearly disclosed in application Serial Number 417,348 of which the present application of the invention herein disclosed to state that the function of jaws 2| and 22 i to grip each individual slug as it is presented between them to occupy the position wherein it is shown at 24 in Fig. and then to draw the slug toward the cutters I I and I2 which sever its ends after which the jaws discharge the slug from between the It will suffice for an understanding l cutters and deposit it in a galley wherein it beare identical and each, as shown in Fig. 6,.com-

prises a hollow mandrel 60 which is slidable on the shaft l0 and keyed thereto by keys 6| which extend into longitudinal splines in the shaft. There are preferably two such keys 6| in each mandrel diametrically opposed for balance; The saw blade is held on the mandrel by a nut 62 which clamps the blade against a collar 63. This collar is backed by the inner race of a ball hear ing 64 which in turn backs against a flange 65 on thermandrel.

The outer race of the bearing 64 is enclosed by a housing 6 3 which is formed as an integral part of a guard casting 6'! which covers and protects the saw blade. An annular plate 68 is secured by screws to the inside of the guard casting 61 and an annular marcelled spring, 69, interposed between this plate and the outer race of the bearing 64, retains the bearing against endwise movement in its housing. The outer race of the bearing fits loosely within its housing, so that while the saws'are accurately aligned by being mounted on the same shaft, the castings which guard them'need not be supported with the same degree of accuracy, but may be moved radially for the distance of the space between the bearings 64 and the housing 66. Through this construction the saws may be adjusted longitudinally of the shaft the saw is to be adjusted, and to advance the bolt into a notch for latching it in its adjusted position.

The adjustment of the saw just described is to set the machine to receive slugs'of a given length, usually measured in increments of inches. The exact length to which the slug is to be trimmed by the operation of the saw is adjustable through the mech by movement of the other saw anism now to be described.

As shown in Figs. 1 and 6, the guard of the saw I2 supports a bearing '53 for one end of a threaded shaft 19, the other end of which is journalled in a bearing 85! supported by the framework of the machine independently of thesaw H. The guard of the saw i l is latched to the threaded shaft 19 by a latch 23% (see Figs. 3 and 6) which has teeth registering with the threads on the shaft and which is pivoted relative to the guard at 82. A spring 83 is interposed between the tail of the latch and a handle 81% which extends upwardly from the saw guard normally to hold the latch engaged. A latch releasing lever 85 is pivoted at 85 and is connected by-a. link 8'! with the latch 85, so that the handle 8 and lever 85 may be grasped simultaneously to with draw the latch and to move the saw longitudinally of the shaft it while the latch is free of the threads on the shaft 19. This permits adjustment of the saw H in increments. equal to the pitch of the threads on the shaft 753. To

effect finer adjustments theshaft may be rotated 7 by a graduated hand dial 38 secured to its end, thus gradually advancing or retracting the point of engagement between its threads and the notched latch 82.

The distance between the saws H and i2 is measured on a scale 99, shown in Figs. 1, 4 and 5; as slidable longitudinally on a rail '9! which is a rigid part of the frame of the machine. The saw E2 is guided along the rail 9! by a slidin connection between the rail and a block 82, shownf in Fig. 4 as carried by the saw guard assembly.

A similar block 93 (Fig. 5) guides the saw H along the rail 9!. The block 92 carries a plate 94 screwed to the scale 98 so that adjustment of the saw 12 causes the scale to slide longitudinally of the rail 9!. The block 93 carries a plate 95 which overlies the scale to form a reference line for determining the distance between the saws. When the lower saw 12 is adjusted,

the upper end of the scale slides under a fixed reference line 96, which indicates the position 1 to which it has been adjusted, and therefore HI by moving the guard castings 61. The bear- 1 ings 64 are designed to prevent thrust play during this adjustment and during operation of the saws, though the saws are actually supported for rotation by bearings 70 and 1011 which mount the opposite ends of the shaft m.

a The saw I2 may be latched in several positions of adjustment, determined by spaced notches H,

(see Figs. 1 and. 2) formed in the edge of the 1 table l4. A sliding bolt Ha shown in Figs. 1v

and 4, enters any one of these notches. The boltlla is carried by the saw guard casting 6! so as to prevent longitudinal movement of the casting relative to the shaft l0 when the bolt is engaged in one of the notches. The bolt Ha is provided with shoulder screws '12 which extend through slots 13 to permit it to slide vertically and a link 74 connects the bolt with a lever 75 pivoted to the casting as at 16; so that itmay be manually'manipulated to retract the bolt when indicates the length of slug the machine is set to receive. This movement of the scale when the saw 52 is adjusted also accommodates it to the saw ii; so that a true reading of the distance between saws may be taken directly from the v position of the reference-plate 95 at all times. The guard assembly of the saw 12 is preferably clamped in any position to which is has been:

adjusted by means of a bolt 9? (Fig. 4) which has a foot 98 at its lower end adapted to be drawn upwardly to cause a plate 99 to press, against the under side of the rail 9i, thus drawing the block 92 into firm engagement therewith. A knurled nut i is threaded to the bolt to draw it upwardly, and is of course loosened when the saw is to be adjusted along the rail;

The shaft iii which rotates the saws H and i2 is continuously driven through a bevel gear 85 secured to'its end, as shown in Fig. 2, and

meshes with a similar gear It'd pinned to. ashaft I07 which extends through a transmission housing I08. The shaft I01 is journalled in suitable bearings (not shown) and has an end extending through the housing to be driven by some suitable power source, such as an electric motor with which it may be connected as by a pulley I I I and a belt not shown.

Having thus described our invention, what we claim and desire to secure by Letters Patent is:

1. In a type slug end cutter, a pair of spaced saws, a single shaft for driving said saws, a guard housing for each saw embracing said shaft, a mandrel for each saw splined to the shaft for longitudinal adjustment thereon, a thrust bearing interposed between each mandrel and the saw guard, and housings for said bearings carried by the guards and of sufficiently greater diameter than the bearing to accommodate them if the guards are slightly eccentric to the shaft.

2. In a type slug end cutter, a pair of spaced saws mounted for adjustment to and away from each other, a housing for each saw arranged to be adjusted with the saw, a stop for positioning lugs to be cut by the saws carried by one saw housing, means to adjust the one saw with its housing and stop to accommodate slugs of different lengths, and means to adjust the other saw to determine the exact length to which the slugs are to be cut.

3. In a type slug end cutter, a pair of spaced saws, a single shaft for driving said saws, a mandrel for each saw splined to the shaft for longitudinal adjustment thereon, a guard for each saw, a thrust bearing interposed between each mandrel and guard whereby the saws may be adjusted longitudinally of the shaft by manipulation of the guards and housings on the guards inclosing said thrust bearings and sufiiciently larger than the bearings to permit slight displacement of the guards radially of the shaft.

CHARLES W. CURLE. THEODORE C. CURLE. RAY F. NEWTON.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Certificate of Correction Patent N 0. 2,426,727. September 2, 1947.

CHARLES W. CURLE ET AL.

It is hereby certified that errors appear in the printed specification of the above numbered patent requiring correction as follows: Column 2, line 38, after the word which insert the slugs are stacked, after their ends are cut, in the order in which; column 4, line 62, for which is read which it; and that the said Letters Patent shou'id be read with these corrections therein that the same may conform to the record of the case-in the Patent Office.

Signed and sealed this 25th day of November, A, D. 1947.

THOMAS F. MURPHY,

4ssz'stant Commissioner of Patents. 

